Are there any stronger Stag driveshafts that can handle around 350HP?

[Guest]

Hi, I am starting to hear some creaking noises and other sounds (what sounds like sticking splines) coming from my drivers side rear driveshaft. I would like to fit a new set of driveshafts but they will need to handle the punishing power of my Chevy LS1. I am fairly sure the Datsun driveshaft conversion will not handle the power. Does anyone know the power handling capability of the Rilsan GKN solutions? Are there any other solutions?? Thanks Spin.

[Dave Worrall]

Hi Spin,

some people have converted the back end to use the BMW drive shafts, which have power figures of up to 344bhp.

Dave.

[mjheathcote]

BMW E30 Rear end complete with diff/shafts/disc brakes.
You aren't putting 350BHP through the standard stag diff are you?!
The rilsan coated driveshafts are still the standard shafts but coated in 'rilsan', as far as I am aware?
Nice problem to have!!
Cheers
Mike

[Kevin Garrod]

You aren't putting 350BHP through the standard stag diff are you?!

Isn't that how they make iron fillings?

[Guest]

BMW E30 Rear end complete with diff/shafts/disc brakes.
You aren't putting 350BHP through the standard stag diff are you?!
The rilsan coated driveshafts are still the standard shafts but coated in 'rilsan', as far as I am aware?
Nice problem to have!!
Cheers
Mike

Hi Mike, No I have a BMW E30 LSD but have it all going through the Stag driveshafts. I knew the driveshafts were the weak link and it is to be expected with the power but now I need to find something that will cope. . Spin

[Stagdad]

BMW E30 Rear end complete with diff/shafts/disc brakes.
You aren't putting 350BHP through the standard stag diff are you?!
The rilsan coated driveshafts are still the standard shafts but coated in 'rilsan', as far as I am aware?
Nice problem to have!!
Cheers
Mike

Mike, did you get the one you asked me about in the end?

Spin, I'm sure a man of your talents could make the bmw driveshafts fit onto the old stag hubs.BTW, really pleased with my BMW transplant now i have finally got positioning,tyre size,diff ratio etc sorted out.

Cheers Steve

[mjheathcote]

No I didn't Steve.
Thought it best to complete the projects I have started before buying bits for future projects!

[Stagdad]

Know what you mean Mike ,I can think of mods quicker than i can make them.

Cheers Steve

[cosworthstag]

My Stag has datsun drive shafts and BMW LSD it run ok at 400bhp next week taking power up to 500bhp will see what happens to the drive shafts

[Guest]

Mike, did you get the one you asked me about in the end?

Spin, I'm sure a man of your talents could make the bmw driveshafts fit onto the old stag hubs.BTW, really pleased with my BMW transplant now i have finally got positioning,tyre size,diff ratio etc sorted out.

Cheers Steve

Hi Steve, What diff ratio you running? 3.7? Have you thought about a gps speedometer? takes all the worry out of diff ratio, tyre size and speedo accuracy. Only thing is you have a lot more tunnels than us west aussies, we only have 1! Spin

[Guest]

My Stag has datsun drive shafts and BMW LSD it run ok at 400bhp next week taking power up to 500bhp will see what happens to the drive shafts

OK that sounds interesting, I would not have thought the datsun shafts would handle the power, but you're doing it! What are you going to do next week to get a 25% increase in power? Some photos of your engine and the specs would be great. Are you running the bmw or Stag subframe assembly?
Looking forward to photos of those 'licorice twist' driveshafts next week, Spin

[cosworthstag]

engine.jpgHi SpinCRIM0090.jpg

Its a BMW subframe, the limited slip diff has a ratio of 3.08.1
currently have limited the turbos to 5psi to run in the engine a bit going to increase to 12/14 psi on the rolling road.
The engine is capable of 600bhp+! but entend to stop at about 500bhp

The Stags currently at http://www.topbossperformance.co.uk/ who have built the engine and fitted the larger all round disc brakes

The clocks are all digital

full spec is

Engine tunable to 600+ bhp
Brakes 330mm front
280mm rear 4 pot calipers on front and modifiedbrake discs on front
BMW axle
T5 gearbox transmission and fastroad clutch
Lightened and balanced flywheel
Custom made tubular turbo manifolds
Custom made intercooler
Twin turbo
uprated fuel pump
Currently untuned running 400 bhp
Cosworth V6
Carbon fibre dash
Iridium digital clocks
S/S custom made exhaust
Polyurethane bushes
Spax suspension
Clifford security and remote startalarm
Alchemist 17" wheels

[Guest]

Excellent, seems like a new era has arrived for the Stag!
One of those V6 Cosworths would go well in my 1981 Lotus Esprit.
Are you aware Peter Hills on this forum is looking for wildly modified Stags for articles in the Mag?
Let me know how those Datsun driveshafts go. Spin

[Peter Hills]

I am aware! You'll all just have to wait.

[peter oneill]

Hi will you be at national day we would like to have your car as a entry peter